body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

header {
  background-color: #333;
  color: #fff;
  padding: 20px;
}

header h1 {
  margin: 0;
}

nav ul {
  list-style-type: none;
  padding: 0;
}

nav ul li {
  display: inline;
  margin: 0 10px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
}

.content {
  padding: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table th, table td {
  padding: 10px;
  border: 1px solid #ddd;
  text-align: left;
}

button {
  padding: 5px 10px;
  margin: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #ddd;
}

form {
  margin: 20px 0;
}

form label {
  display: block;
  margin-bottom: 5px;
}

form input, form select {
  width: 100%;
  padding: 8px;
  margin-bottom: 10px;
}

form button {
  background-color: #4CAF50;
  color: white;
  padding: 10px 15px;
  border: none;
  cursor: pointer;
}

form button:hover {
  background-color: #45a049;
}
